News from the NNI Community - Research Advances Funded by Agencies Participating in the NNI

Scientists at the U.S. Department of Energy’s Brookhaven National Laboratory have designed and synthesized chains of molecules with a precise sequence and length to efficiently protect 3-D DNA nanostructures from structural degradation under a variety of biomedically relevant conditions. They demonstrated how these "peptoid-coated DNA origami" have the potential to be used for delivering anti-cancer drugs and proteins, imaging biological molecules, and targeting cell-surface receptors implicated in cancer.

Researchers at Penn State, Lawrence Berkeley National Laboratory, and Oak Ridge National Laboratory have developed an atomically thin materials platform that will open a wide range of new applications in biomolecular sensing, quantum phenomena, catalysis, and nonlinear optics. If you were to combine a metal with other 2D materials via traditional synthesis processes, the chemical reactions during synthesis would ruin the properties of both the metal and layered material. To avoid these reactions, the team exploited a method that automatically caps the 2D metal with a single layer of graphene while creating the 2D metal.

Researchers at Penn State, Lawrence Berkeley National Laboratory, and Oak Ridge National Laboratory have developed an atomically thin materials platform that will open a wide range of new applications in biomolecular sensing, quantum phenomena, catalysis, and nonlinear optics. If you were to combine a metal with other 2D materials via traditional synthesis processes, the chemical reactions during synthesis would ruin the properties of both the metal and layered material. To avoid these reactions, the team exploited a method that automatically caps the 2D metal with a single layer of graphene while creating the 2D metal.

Researchers at NIST have devised a way to eliminate a long-standing problem affecting our understanding of both living cells and batteries. When a solid and an electrically conducting liquid come into contact, a thin sheet of charge forms between them. Although this interface, known as the electrical double layer (EDL), is only a few atoms thick, it plays a central role in a wide range of systems, such as keeping living cells nourished and maintaining the operation of batteries, fuel cells, and certain types of capacitors. The NIST researchers have now mapped variations in voltage across a sheet of EDL with nanoscale precision by using a thin membrane of graphene.

Researchers at NIST have devised a way to eliminate a long-standing problem affecting our understanding of both living cells and batteries. When a solid and an electrically conducting liquid come into contact, a thin sheet of charge forms between them. Although this interface, known as the electrical double layer (EDL), is only a few atoms thick, it plays a central role in a wide range of systems, such as keeping living cells nourished and maintaining the operation of batteries, fuel cells, and certain types of capacitors. The NIST researchers have now mapped variations in voltage across a sheet of EDL with nanoscale precision by using a thin membrane of graphene.

Researchers at the City University of New York and Northwestern University have created a 4-D printer that can construct precisely designed nanopatterned surfaces that are decorated with delicate organic or biological molecules. The surfaces could be used in drug research, biosensor development, and advanced optics.

Researchers at the City University of New York and Northwestern University have created a 4-D printer that can construct precisely designed nanopatterned surfaces that are decorated with delicate organic or biological molecules. The surfaces could be used in drug research, biosensor development, and advanced optics.

Scientists at Rice University and collaborators in Taiwan and China have successfully grown atom-thick sheets of hexagonal boron nitride as two-inch diameter crystals across a wafer. Surprisingly, they achieved this long-sought goal of making perfectly ordered crystals of hexagonal boron nitride by taking advantage of disorder among the meandering steps on a copper substrate.

Scientists at Rice University and collaborators in Taiwan and China have successfully grown atom-thick sheets of hexagonal boron nitride as two-inch diameter crystals across a wafer. Surprisingly, they achieved this long-sought goal of making perfectly ordered crystals of hexagonal boron nitride by taking advantage of disorder among the meandering steps on a copper substrate.

Ever since graphene's discovery in 2004, scientists have looked for ways to put this 2D material to work. Last year, scientists at Lawrence Berkeley National Laboratory developed a multitasking graphene device that switches from a superconductor, which efficiently conducts electricity, to an insulator, which resists the flow of electric current, and back again to a superconductor. Now, the scientists have tapped into the graphene system's talent for juggling not just two properties, but three: superconducting, insulating, and a type of magnetism called ferromagnetism.